Callum Steer (born October 20, 1999) is the youngest child of Kelly (aged 25), youngest brother of Sophie (aged 5) and grandson of Trina.

He often lashed out, threw tantrums and like Sophie, messed his room up. His behaviour did start to improve when Jo left unlike Sophie.

He was 4 (almost 5) years old on Supernanny and will be 19 in 2018.